Lubricating-pump.



No. 893,118. PATENTED JULY 14, 1908.

J. S. WARD.

LUBRIGATING PUMP. APPLICATION FILED 1920.23, 1907.

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llllll mlllll No; 893,118. 'PAYITENTEDUULY 14, 1903:. I -J.S.WARD.-

LUBRIGATING PUMP.

APPL IGATION FILED DEC; 2 3, 1907.

' 4SHEETS-SHBET s.

.PATENTED JULY 14, 1903. J. s. WARD.

LUB'RIUATINGPUMPL 7 APPLICATION FILED D30. 23. 19.07.

llllllllllll ll UNITED STATES ,IATENT OFFICE.

JOHN S. WARD, OF CHICAGO, ILLINOIS, ASSIGNOR TO PHENIX LUBRIOA'IOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION ILLINOIS.

LUBRIGATING-PUMP.

Specification of Letters Patent.

Patented July 14, 1908.

Application filed December 23, 1907. Serial No. 407,846.

To all whom it may concern:

Be it known that I, JOHN S. WARD, a citizen of the United States, residing at Chicago,

in the county of Cook and State of Illinois,

' or parts from which a reciprocating movement may be had for operating the pump.

The genera object of my invention is to provide a simple, eflicient and positive acting pump which may be simple in its design and adjustment and not liable to get out of order. It is also my object to rovide a sight feed so located and arrange that it is on the force side instead of the suction side and yet is relieved of pressure so that the glass tube may be omitted if desired or, if provided may break without afiecting the operation of the apparatus.

The specific features which contribute to this general object'are related more particularly to the construction of the piston and the passages leading thereto and therefrom, and the connection between the traveling rod or the operating member and the piston, the connection being such as to eliminate the possibility of accidental change of adjustment.

I obtain my objects by the mechanism illustrated in the accompanying drawings, in which:

' Figure 1 is a sectional elevation of the complete apparatus taken on line 11 Fig. 5. Fig. 2 is a lan of the parts shown in Fig. 1. Fig. 3 1s' a perspective view of the traveling bar which operates the piston. Fig. '4 is a perspective view of the piston. Fig. 5 is a sectional elevation taken on line 5-5 Fig. 1. Figs. 6 and 7 are views showing the construction of the ratchet connection between the ratchet rod and the eccentric shaft. The views are taken on the lines 66 and 77 respectively. Fig. 8 isa plan section of the piston and adjacent portion of the casing taken on line 88 Fig. 1. Fig. 9 is a vertical section taken von line 9-9 Fig. 8. Fig. 10 is a vertical section taken on line 1010 Fig. 8. Fig. 11 is avertical section taken on line 1111 Fig. 8. Fig. 12 is a plan section taken on line 12-12 Fig. 10 and Fig 13 is a plan section taken on line 1313 Fig. 10.

Similar numeral characters denote similar parts throughout the several views.

The main framework of the a paratus consists of a base 15 upon which is mounted a reservoir 16 having a cover 17. These parts maybe constructed along various lines of design and have no special bearing upon the invention. The traveling bar 18 is slidably mounted in the base 15'and serves to operate the piston.-

In the design shown, two pumps are mounted in a common reservoir and operated from a common eccentric shaft. This fact however is unimportant and the number of pumps may be greater or less than two, as desired.

.Any suitable means may be employed for producing a reciprocatory movement of the traveling bar so long as said bar maintains a proper timed relation with the speed of the parts to be lubricated. For the sake of illustration I have illustrated a mechanism for this urpose which consists of an eccentric 19 aving two eccentrics 20 thereon, adapted to engage the fingers 21 upon bar 18. The construction is such that the rotation of shaft 20 produces reciprocation of bar 18 in its bearings in the base 15.

22 represents a rod supposed to have a movement in unison with some moving part of the mechanism to be lubricated. This is connected by means of a suitable connecting piece 23 to a ratchet rod 24. 'A ratchet device 25, best illustrated in Figs. 1, 6 and 7 is so constructed as to impart an intermittent rotary movement to the shaft 19, said shaft rotating always in the same direction notwithstanding the vibratory or oscillatory movement of the rod 24. A detailed description of this ratchet mechanism is' unnecessary as it forms no essential part of the present invention and ratchet mechanisms of this type are already well known in the art.

Secured to the reservoir 16 in any suitable manner is a number of pump casings 30, the number depending upon the requirements to which the apparatus is to be put. The means selected for securing the pump casing to the wall of the reservoir are the shoulders 31 formed on said casing and adapted to contact the inner surface of said casing wall, and a nut 32 adapted to screw upon the threaded extension 33 which is integral with the pump casing and projects througl'i an aperture in the wall, as best shown, in Fig. Said extension. 33 is cylindrically chambered so as to form, in conjunction with the follower 34, and stuffing nut 35 a stuffing box.

Each valve casing has a horizontal passage or piston chamber 40 which contains the tube 41 and communicates with the vertical passage 42. the casing by means of the pin 43 or otherwise shown in Fig. 9. Tube 41. completely fills the inner horizontal portion of the passage 40 but at its outer portion is surrounded by the hollow piston 44. A shoulder 45 in. said piston chamber defines the limit or inner end of the piston chamber and is located at the inner edge or slightly beyond the vertical passage 46.

Piston 44 is reciprocated by means of the traveling bar 18. F or this purpose the piston 44 has a collar 47 thereon which is adapted to be contacted by the bifurcated extremity of said bar. The formation. is best shown in Figs. 3 and 4, said bar having an upward projection 48 terminating in two fingers 49 inclosing a vertical slot 50. Behind the collar 47 thepiston has a threaded portion 52 adapted to receive the jam nuts 51. Said portion 52 is not cylindrical, but is flattened or planed off so that its width is less than its depth. The parts are so proportioned that extension 52 fits snugly within the slot 50 between the fingers 49 of the traveling bar, thus preventing the piston from rotating about its own longitudinal axis. As rotation of the piston is thus prevented, there is no tendency for the inner jam nut 51 to be rubbed by the fingers 49 in such direction as to loosen said am nut and thus alter the adjustment or amount of motion lost between the traveling ,bar and piston 52; for it will be understood by those skilled in the art that in order that the pump may cause to circulate a greater or less amount of lubricant, it is customary to provide a lost motion connection between the traveling bar and the piston, the lost motion device being adjustable so that the piston may have all or any part of the travel of the traveling bar. With the adjustment shown in Figs. 2, 5 and 8, in which the adjusting nuts are set away from collar 47 the piston will travel a smaller distance than the traveling bar, but by screwing up the nuts sufficiently the piston may be made to have the same travel as said bar. Although this general type of lost motion connection between the traveling bar and the piston of a lubricating pump is well known in the art, I am, by reason of the flattened shape of the iston and the correspondingly narrowed s ot at the bifurcated extremity of bar 18, enabled to effectually prevent any accidental variation or change in the amount of piston travel.

Now referring to the interior passages of Tube 41 is rigidly fastened to chamber.

the pump casing, the passage 42 heretofore mentioned has a check valve 55 located at its lower or intake extremity and a check valve 56 located. at its upper or discharge extremity. A pipe 57 leads upward from valve 56 and then takes a downward bend through the glass sight tube 58. From this, a pipe 5!) leads downward to communicate with. the horizontal passage 60 whose mouth is controlled by the check valve 61 as shown in Figs. 10 and 11. Said assage leads into the chamber 62 and from c iamber 62 a substantially horizontal passage 63 leads to the piston chamber. Thence the vertical assage 46, previously mentioned, leads to a c iamber 64 from which leads the discharge pipe 65. The check valve 66 in chamber 64 ermits upward but prevents return flow of In ricant through the chamber 64. A

In operation, the piston is reciprocated by the traveling bar 18 in the manner already indicated. The outward travel of the piston 1 from the position shown in Fig. 9 produces two results; first it draws the lubricating oil or other liquid to be circulated, through valve 55 into the stationary inner tube 41, or passage 42 communicating therewith, and simultaneously draws the oil from the passage 60 into the chamber 62 and into the piston As soon as the outward travel has been completed and the piston begins to move inward, it forces oil from the tube 41 and the passage 42 up through the pipe 57 whence it drops through the sight tube 58 and pipe 59 into the chamber 60. At the same time the forwardly moving piston forces the oil which has previously been drawn into the piston chamber from the passage 60 and chamber 62 out ast valve 66 and chamber 64 to the final ischarge duct 65. It will thus be seen that the outwardly moving piston, has a double suction, that is, it acts upon the oil in the inside of tube 41 and also upon the oil in the piston chamber outside of pipe 41. There is no direct, and not of necessity any indirect communication between the inside and the outside of tube 41. The ducts 57, 58 and 59 might be entirely omitted, and oil supplied to passages 42 and 60 from different sources; in which case the pump would cause the forced circulation of two different oils which might never be commingled. The advantage however in leading the oil to passage 60 and chamber 62 from pi e 57 is that It renders it possible to make tie pump a sight feed apparatus in which no pressure is exerted upon the glass sight tube. With the arrangement here illustrated, the glass tube might break or be entirely omitted without in any wise affecting the operation of the apparatus. This is accounted for by the fact that the piston being hollow and operating over a hollow tube acts both inside and outside and in reality constitutes a double piston which exerts force on the moving stream of liquid at two different points. In view of this fact and the presence, at theproper points, of two pairs of check valves, the sight tube is relieved of every bit of internal pressure.

What I claim as new, and desire to secure by Letters Patent, is: v

1. In a pump, the combination of a casing having a piston chamber and a tubular passage within said chamber not communicating therewith, said piston chamber and tubular passage having se arate ports and a hollow movable piston adapted to close one end of said tubular passage and to reciprocate within said piston chamber. 2. A pump having a casing and two pairs of ports therein there being an inlet and an outlet port in each pair, a tube rigidly fixed in said casing and communicating with one pair of ports, said tube being' open at both ends, a piston chamber in said casing communicating with the other pair of ports and a hollow piston in said chamber, said piston being closed at one end and fitting over said tube to close one end thereof.

3. A pump having a casing provided with a piston chamber and ports leading thereto and therefrom, a hollow piston fitting in said piston chamber and being closed at its outerend, and a tube in said casing, open at both ends, and adapted to fit within said piston, said casing having a second pair of ports therein and said tube communicating at one end with said second set of ports.

4. A pump having a casing provided with a piston chamber andports leading thereto and therefrom, a hollow piston fitting in said piston chamber and being closed at its outer end, a tube rigidly fastened in said casing and being open at both ends, one end of said tube lyin within said piston and being closed there y, a passage for ingress and egress of liquid to and from the end of the tube opposite to the end which is closed by said piston.

5. In a pump, the combination of a casing having a iston chamber and so constructed that liquid may enter, and leave said chamber through said casing, a hollow piston closed at its outer end, a tube in said casing, said casing having a passage communicating with the inside of said tube whereby liquid may enter and leave said casing without entering said piston chamber, and a piston fitting in said piston chamber for causing liquid to enter and leave it, said piston being hollow and closed at one end and fitting over said tube for causing liquid to enter and leave the passage communicating with said tube.

6. In a pump, the combination of a casing having a piston chamber and so constructed that liquid may enter and leave said chamber through said casing, a hollow piston closed at its outer end, a tube in said casing, said casing having a passage communicating with the inside of said tube whereby liquid may enter and leave said casing without entering said piston chamber, a piston fitting in said piston chamber for causing liquid to enter and leave it, said piston being hollow and closed at one end and fitting over said tube for causing liquid to enter and leave the passage communicating with said tube and means for conveying liquid from said passage to said piston chamber.

7. In a pump, the combination of a casing having a piston chamber and so constructed that liquid may enter and leave said chamber through said casing, a hollow piston closed at its outer end, a tube in said casing, said casing having a passage communicating with the inside of said tube whereby liquid may enter and leave said casing without entering said piston chamber, a piston fitting in said piston chamber for causing liquidto enter and leave it, said piston being hollow and closed at one end and fitting over said tube for causing liquid to enter and leave the passage communicating with said tube and a sight tube for conveying liquid from said passage to said piston chamber.

8. In a pump, the combination of a casing having a piston chamber and so constructed that li uid may enter and leave said chamber through said casing, a hollow piston closed at its outer end, a tube in said casing, said casing having a passage communicating with the inside of said tube whereby liquid may enter and leave said casing without entering said piston chamber, a piston fitting in said piston chamber for causing liquid to enter and. leave it, said piston being hollow and closed at one end and fitting over said tube for'causing liquid to enter and leave the passage communicating with said tube, a sight tube for conveying liquid 'from said passage to said piston chamber, and a lost motion device for reciprocating said piston.

9. In a pump, the combination of a casing having a piston chamber therein, an inlet to said piston chamber, a check valve controlling the same, an outlet from said piston chamber, a check valve controlling the same, a tube fixed within said casing and having a portion located within said piston chamber, an inlet in said casing communicating with the inside of said tube, a check valve controlling the same, an outlet in said casing communicating with the inside of said tube, a check valve for controlling the same, and a hollow piston closed at one end and fitting over said tube.

10. In a pump, the combination of a casing having a piston chamber therein, an inlet an inlet in said casing communicating with the inside 01 said tube, a check valve controlling the same, an outlet in said casing communicating with the inside of said. tube, a check valve for controlling the same, a hollow piston closed at one end and fitting over said tube, and a tube leading from said last mentioned outlet to the inlet of the piston chamber.

11. The combination, with a pump )iston of a reciprocating traveling member or reciprocating it, said piston being screw threaded to receive nuts for contacting said traveling member to be operated thereby, the screw threaded portion of said piston being tlattencd and adapted to fit closely within a slot in said traveling member.

12. In a pump, the combination of a casing, a piston working therein, a slotted traveling member for operating said piston and a lost motion connection, between said piston and said traveling member, said connection including a flattened portion of the )iston fitting within the slot in said traveling member and nuts screwing onto said piston to contact said traveling member.

13. In a pump, the combination of a reciprocating traveling member having a pair of fingers, a pump casmg, and a piston adapted to reciprocate in said casing, said piston having a flattened portion fitting between said fingers tightly enough to permit the traveling member to move longitudinally independently of the piston, and means on said piston for engaging the fingers on said traveling member, said engaging means including nuts screwing onto said. piston.

14. In. a pump, the combination with a pump casing, of a piston working therein, a collar on said piston, adjusting nuts on. said piston, said piston. being flattened between said collar and the screw threaded portion adapted to receive said nuts, said traveling member having fingers located closely together for including within them the flattened portion of said piston to prevent rotation of said piston about a lengthwise axis.

In witness whereof, I. have hereunto subscribed my name in the presence of two witnesscs.

JOHN S. WAl-tl). Witnesses:

.l'lowAnn M. Cox, C. J. ()nnIs'roFFEL. 

